There was no happy ending for Happy Endings or Don't Trust the B---- in Apartment 23 on Sunday.Airing their first episodes in their Sunday slots, the ABC comedies both hit series lows. Happy Endings drew 2.6 million viewers and a 1.0 in the 18-to-49 demographic, while Apt 23 nabbed 2.2 million viewers and a 0.9. Lead-ins Once Upon a Time (9 million, 3.1) and Revenge (7 million, 2.3) were both down from their fall finales last month.Winter TV Preview: Must-see new showsFox won the night thanks to an NFL overrun.On NBC, the season premiere of The Biggest Loser, featuring the return of Jillian Michaels, bowed to 7 million viewers and a 2.9, up 21 percent from its previous season opener.CBS' The Good Wife (10 million, 1.8) was flat, while The Mentalist (10.7 million, 2.1) matched a season high.8 p.m.CBS: Person of Interest (R) 8.4 million viewers (1.3 demo rating)ABC: Once Upon a Time 9 million (3.1)Fox: The Simpsons 9.6 million (4.4); Bob's Burgers 6.5 million (3.1)NBC: Dateline 6.2 million (1.5) [7-9 p.m.] 9 p.m.CBS: The Good Wife 10 million (1.8)ABC: Revenge 7.6 million (2.4)Fox: Family Guy 7.1 million (3.5); American Dad! 5.5 million (2.8)NBC: The Biggest Loser 7 million (2.9) [9-11 p.m.]10 p.m.CBS: The Mentalist 10.7 million (2.1)ABC: Happy Endings 2.6 million (1.0); Don't Trust the B---- in Apartment 23 2.2 million (0.9)